Methods and systems for implementing a universal set top box

ABSTRACT

A system is disclosed. The system has a first receiver, a second receiver, and an input device configured to transmit a command signal in response to user input. The system also has an input waveguide having a first end in communication with the input device and terminating at the first receiver, and a second end in communication with the second receiver. The input waveguide is arranged to receive and route the command signal to the second receiver. The system also has an output waveguide having a first end in communication with the first receiver, and a second end in communication with the second receive. The second receiver is configured to determine whether the command signal is directed to the first receiver and/or the second receiver based a code contained in the command signal. The second receiver is further configured to execute the command signal when it is determined that the command signal is directed to the second receiver, and relay the command signal through the output waveguide to the first receiver for execution when it is determined that the command signal is directed to the first receiver.

I. BACKGROUND INFORMATION

When customers purchase television services from a provider, they are usually supplied with standard equipment, including a set top box (STB) and a universal remote control to access content, such as television programs. The set top box includes, among other things, security and decoding functions which convert incoming content to a format compatible with the customer's television. Therefore, the set top box is required to access the service provider's programming. The set top box also usually controls content navigation and storage operations, such as, for example, channel selection, content guide viewing, network interactivity capabilities (e.g., pay-per-view and video on demand requests), and recording and/or playback features. As such, customers may rely solely on the set top box for many of the features, rendering redundant the same or similar functionality included in their own equipment. As a result, customers must oftentimes set aside the remote control(s) that came with their television and/or other home electronics equipment and instead use the universal remote supplied by the service provider.

One problem with this arrangement is that the universal remote control supplied by the service provider may not exploit all of the features available on the original remote control supplied with the customer's television. For instance, a customer's television may include features such as menus to adjust video settings (e.g., color, contrast, tint, brightness, etc.) and/or audio settings (e.g., bass, mid, treble, surround sound, etc.), volume control, picture-in-picture modes, auxiliary input selection, etc. These features may be utilized by inputting appropriate commands to feature-specific controls included on original remote control. However, the universal remote control may not provide controls specific to the unique features available on the customer's television. In many cases, the universal remote control only includes controls for features specific to the set top box and/or other generic features.

This has been a source of frustration for customers, because use of the service providers' required equipment in the context renders useless many of the features unique to the customers' equipment. This has also aggravated companies attempting to differentiate their products in the consumer electronics industry, because usable product functionality is ultimately limited by the equipment supplied by the service provider.

As such, there is a need to allow customers to use the original remote control, instead of the universal remote control supplied by the service provider, to control functions of both the television and the set top box.

II. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a pictorial representation of an exemplary disclosed system;

FIG. 2 is a diagrammatic representation of the exemplary disclosed system of FIG. 1;

FIG. 3 is a cross-sectional representation of an exemplary disclosed tether for use with the system of FIG. 2;

FIG. 4 is a flowchart depicting an exemplary disclosed method employed by the system of FIG. 2.

III. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Reference will now be made in detail to an exemplary disclosed system, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent similar elements unless otherwise represented. The implementations set forth in the following disclosure do not represent all possible implementations consistent with the disclosure. Instead, they are merely examples of systems and methods consistent with aspects related to the disclosure as recited in the appended claims.

One aspect of the disclosure is directed to a system. The system may include a first receiver, a second receiver, and an input device configured to transmit a command signal in response to user input. The system may also include an input waveguide having a first end in communication with the input device and terminating at the first receiver, and a second end in communication with the second receiver. The input waveguide may be arranged to receive and route the command signal to the second receiver. The system may further include an output waveguide having a first end in communication with the first receiver, and a second end in communication with the second receiver. The second receiver may be configured determine whether the command signal is directed to the first receiver and/or the second receiver based a code contained in the command signal. The second receiver may be further configured to execute the command signal when it is determined that the command signal is directed to the second receiver, and relay the command signal through the output waveguide to the first receiver for execution when it is determined that the command signal is directed to the first receiver.

Another aspect of the disclosure is directed to a method. The method may include transmitting a command signal from an input device in response to user input, receiving the command signal with an input waveguide, and routing the command signal to a first receiver through the input waveguide. The method may further include determining, by the first receiver, whether the command signal is directed to the first receiver and/or a second receiver based on a code contained in the command signal. The method may also include executing the command signal, by the first receiver, when it is determined that the command signal is directed to the first receiver; and relaying the command signal, by the first receiver, through an output waveguide to a second receiver for execution, when it is determined that the command signal is directed to the second receiver.

Another aspect of the disclosure is directed to a tether for coupling a first receiver and a second receiver. The tether may include an input waveguide and an output waveguide disposed parallel to one another with respect to longitudinal axes thereof, a first reflective cladding surrounding the input waveguide, and a second reflective cladding surrounding the output waveguide. The tether may also include an opaque insulator disposed between the input waveguide and the output waveguide, and a sheathing surrounding the input waveguide, the output waveguide, the first reflective coating, the second reflective coating, and the opaque insulator. Further, at least a portion of the input waveguide and a portion of the output waveguide may be exposed at a first end of the tether, and the exposed portion of the input waveguide may be in communication with an input device configured to transmit a command signal in response to user input.

Yet another aspect of the disclosure is directed to a system. The system may include an input device configured to transmit a command signal in response to user input, and a first receiver in communication with a second receiver. The first receiver may be configured to receive the command signal, determine whether the command signal is directed to the first receiver and/or the second receiver based on a code contained in the command signal. The first receiver may be further configured to execute the command signal when it is determined that the command signal is directed to the first receiver, and relay the command signal to the second receiver for execution when it is determined that the command signal is directed to the second receiver.

Still yet another aspect of the disclosure is directed to a method. The method may include transmitting a command signal from an input device in response to user input, receiving the command signal by a first receiver, and determining, by the first receiver, whether the command signal is directed to the first receiver and/or a second receiver based on a code contained in the command signal. The method may further include executing the command signal, by the first receiver, when it is determined that the command signal is directed to the first receiver, and relaying the command signal, by the first receiver, to a second receiver for execution, when it is determined that the command signal is directed to the second receiver.

FIG. 1 shows an exemplary system 10. System 10 may include an input device 12, a first receiver 14, a second receiver 16, and a tether 18. Input device 12 may be any device which receives input from a user and transmits a corresponding command signal 12 a in response. For example, input device 12 may be a remote control with an infrared (IR) light emitting diode or another suitable component that transmits a command signal 12 a, such as electromagnetic radiation. However, it is to be appreciated that input device 12 may transmit command signals in any desired electromagnetic radiation band.

In one embodiment, first receiver 14 may be television receiver. However, first receiver 14 may be any device capable of providing media content to a user, such as, for example, an optical disk player and/or recorder (e.g., CD, DVD, MD), a VCR, an audio amplifier, a personal computer, or any other consumer electronics appliance that may receive commands by way of remote control.

Second receiver 16 may be a set top box (STB) or other receiver known in the art capable of receiving media content from a service provider network, and converting the content into a format suitable for presentation to a user. However, it is to be appreciated that second receiver 16 may alternatively be another consumer electronics appliance, such as one of the examples provided above in connection with first receiver 14. In one aspect, second receiver 16 may be operatively coupled to provide the media content to the user by way of first receiver 14.

Command signal 12 a may include, among other things, a device code and a function code. The device code may identify the device the command is intended for (e.g., specific manufacturer, model number, etc.), while the function code may identify the function intended to be executed (e.g., “menu”, “volume up”, “channel down”, “play”, “picture-in-picture”, etc.). For example, the user may press a television menu button on remote control 12. As such, command signal 12 a may include a device code identifying the user's television 14, and a function code identifying a menu feature associated with television 14. Likewise, the user may press a “channel up” button on remote control 12. As such, command signal 12 a may include a device code identifying television 14, and a function code identifying the “channel up” operation. It is to be appreciated that the codes and any communications referred to herein may be in accordance with any desired protocol known in the art (e.g., SONY control-S, Philips RC-5, etc.).

Referring to FIG. 2, first receiver 14 may include a first sensor 14 a to receive transmitted command signals. Similarly, second receiver 16 may include a second sensor 16 a to receive transmitted command signals. In one embodiment, sensors 14 a, 16 a, may each embody an optical sensor (e.g., an infrared sensor), such as, for example, a photodetector, a photodiode, a phototransistor, or any other such device known in the art for detecting ambient energy capable of carrying a signal. Second receiver 16 may also include a transmitting device 16 b, such as an infrared light emitting diode or other suitable transmitting device, to generate command signals in response to commands from a controller 20.

Controller 20 may comprise one or more processing devices that execute computer instructions in response to input from external sources and/or data stored on one or more storage devices (not shown). Controller 20 may include, for example, one or more microprocessors and memory storage. The microprocessor(s) may be any commercially available, off-the-shelf microprocessor(s), or application-specific integrated circuit(s) specifically adapted for system 10. The memory storage may include any desired combination of random access memory (“RAM”), read-only memory (“ROM”), and/or secondary storage devices (e.g., magnetic disks, optical disks, magnetic tape, and/or flash memory). Controller 20 may include an application in the form of software, hardware, and/or firmware configured to, among other things, affect operation of the disclosed method.

Controller 20 may be in communication with a database (not shown), which may be stored in the microprocessor(s) and/or memory storage of controller 20. Alternatively, the database may be stored in a remote location, if desired. In one embodiment, the database may contain a plurality of indexed entries, each including a device code, a function code, and one or more processing flags associated therewith, stored in a desired data structure. It is to be appreciated that the device code and/or function code contained in the entries may correspond to the device code and/or function code contained in command signal 12 a, as discussed above. For example, the plurality of entries may comprise a catalog of universal remote control codes for a multitude of different manufacturers and devices. In one aspect, the catalog may be preloaded on the database. However, entries may be added to the catalog by, for example, downloading from the service provider's network and/or the Internet, uploading by an external device, and/or manually entered by the user.

Continuing with the example above where first receiver 14 is a television and second receiver 16 is a set top box, it is to be appreciated that some command signals 12 a (e.g., “channel up”, “play”, “record”, etc.) may be directed to, and should be executed by, set top box 16. Likewise, some commands may be directed to, and should be passed through to and executed by, television 14 (e.g., “volume”, “picture-in-picture”, “mute”, etc.). Further, some commands (e.g., “power on/off”, “up”, “down”, “enter”, etc.) may be directed to either or both of television 14 and set top box 16, and should be passed through and/or executed by set top box 14, depending on the circumstances. As such, the process flag included with each entry may comprise one of a global pass-through flag, an unconditional pass-through flag, or a multi-function pass-through flag associated therewith, which may be returned by controller 20 upon searching and finding a desired entry in the database.

Receipt of a first global pass-through flag may indicate to controller 20 to enable a global pass-through state, in which subsequent commands may be passed through to first receiver 14 for execution, until a second global pass-through flag is received, which may disable the global pass-through state. For example, menu navigation commands may be applicable to menus associated with either receiver 14, 16. Continuing with the above example, the global pass-through state may be enabled when a television menu key is pressed on remote control 12. It is to be appreciated that once a television menu is activated, the user may wish to navigate through the menu and/or change one or more settings. As such, subsequent command signals (e.g., up, down, left, and “enter”) may be passed through to television 14 for execution, rather than executed by set top box 16, until the television menu key is pressed again (or an “exit” key).

The unconditional pass-through flag may indicate to controller 20 that command signal 12 a is only directed to first receiver 14, and should be passed through to first receiver 14 for execution under all circumstances. For instance, in one example, a “picture-in-picture” command signal may only be directed to television 14. That is, set top box 16 may have no function corresponding to such a command.

The multi-function pass-through flag may indicate to controller 20 that the command may either be passed through to first receiver 14, or executed by second receiver 16, depending on the circumstances. For example, the user may wish to temporarily pass command signal 12 a through to first receiver 14, even if it is directed to second receiver 16, and/or both receivers 14, 16 (i.e., multi-function flag is returned). For example, a “power on/off” command may be directed to either receiver 14, 16. In one embodiment, the user may press a “power on/off” button of input device 12 twice in a short period of time (e.g., double-click), or affect some other input gesture on input device 12, to cause controller 20 to pass command signal 12 a through to first receiver 14. Therefore, controller 20 may include an inter-key timer having a predetermined expiration period. Controller 20 may allow the user to input such a gesture within the expiration period, in order to manually pass command signal through to first receiver 14. However, if the timer expires before the user completes such an input gesture, second receiver 16 may process the signal instead. Alternatively or additionally, the user may press another key to cause the pass-through period to expire. These features will be further discussed below in connection with the disclosed method.

FIG. 3 shows a cross-sectional view of tether 18, which may comprise, for example, a fiber optic cable. Tether 18 may have a first end 18 a affixed to first receiver 14 and a second end 18 b affixed to second receiver 16. In one embodiment, tether 18 may include an input waveguide 22 and an output waveguide 24 disposed parallel to one another with respect to longitudinal axes thereof. Input 22 and output 24 waveguides may each be optical fibers, comprising a glass, a plastic, a polymer, and/or any other suitable material known in the art for guiding electromagnetic radiation.

Tether 18 may further include a first reflective cladding 26 a surrounding input waveguide 22, and a second reflective cladding 26 b surrounding output waveguide 24. Input 22 and output 24 waveguides, and first 26 a and second 26 b claddings may comprise one or more of a glass, a plastic, a polymer, air, and/or any other suitable cladding material known in the art.

Tether 18 may further include an opaque insulator 28 disposed between input waveguide 22 and output waveguide 24, and an outer sheathing 30 surrounding input waveguide 22, output waveguide 24, first reflective cladding 26 a, second reflective coating 26 b, and insulator 28. Insulator 28 and sheathing 30 may comprise one or more of plastic, polymer, rubber, and/or any other suitable material known in the art.

Further, at least a portion 22 a of input waveguide 22 and a portion 24 a of output waveguide 24 may be exposed at first end 18 a of tether 18. In one aspect, exposed portion 22 a may protrude from first reflective cladding 26 a and outer sheathing 30. Similarly, exposed portion 24 a may protrude from second reflective cladding 26 b and outer sheathing 30.

At first end 18 a of tether 18, exposed portion 22 a of input waveguide 22 may be in ambient communication with input device 12, while exposed portion 24 a of output waveguide 24 may be communicatively coupled to sensor 14 a. In one aspect, exposed portion 24 a may be affixed to sensor 14 a by an opaque adhesive 32 (e.g., tape). Adhesive 32 may at least partially cover exposed portion 24 b and sensor 14 a. Preferably, adhesive 32 may substantially and/or completely cover exposed portion 24 a and sensor 14 a and serve to communicatively couple exposed portion 24 a to sensor 14 a, but prevent ambient signals, such as command signals 12 a, from being coupled into output waveguide 24 and/or sensor 14 a. At second end 18 b of tether 18, input waveguide 22 may be communicatively coupled to sensor 16 a. Similarly, output waveguide 24 may be communicatively coupled to transmitting device 16 b.

Although the disclosure is described with respect to tether 18 shown in FIG. 3, it is to be appreciated that other signal links may be used, if desired. For example, in another embodiment, first sensor 14 a may be covered, disabled, and/or absent from first receiver 14. Command signal 12 a may be detected by second sensor 16 a. If the command signal should be executed by first receiver 14, controller 20 may relay the command signal directly to first receiver via an electrical wire or cable (not shown). Other coupling embodiments may become apparent to those skilled in the art upon practice of the disclosure.

Referring now to FIG. 4, during operation 50 of system 10, input device 12 may transmit a command signal in response to user input (step 52). The command signal may then be received by input waveguide 22 (step 54). Specifically, the command signal may be ambiently coupled into exposed portion 22 a of input waveguide 22. Simultaneously, command signal may be blocked by adhesive 32 and/or insulator 28, and prevented from being coupled into output waveguide 24 and/or detected by sensor 14 a. Input waveguide 22 may then route the command signal to second end 18 b of tether 18, at which point the command signal may be detected by sensor 16 a. Sensor 16 a may then provide the detected command signal to controller 20. In one aspect, command signal 12 a may be converted from the optical domain to a corresponding signal in the electrical domain.

Subsequently, controller 20 may read the device code and/or function code contained in command signal 12 a. Controller 20 may then search the entries in the database for the device code and/or function code. If the device code and/or function code is not found and/or is unrecognized (step 56), controller 20 may ignore the command signal 12 a and cause first receiver 14 to display an error message (step 58) (e.g., “unrecognized device”).

If the device code and/or function code is found, controller 20 may initiate an inter-key timer having predetermined expiration period (step 60). Controller 20 may then determine whether command signal 12 a should be executed by the first receiver 14 and/or second receiver 16 (step 62). In this step, controller 20 may return any data associated with the entry, including any of the processing flags discussed above (step 62 a). The data may be stored in the microprocessor(s) and/or memory devices of controller 20 for reference.

Subsequently, controller 20 may determine if the global pass-through feature is enabled (step 62 b). If the global pass-through feature is enabled, controller 20 may next determine if a global pass-through flag was returned in step 62 a (step 62 c). If a global pass-through flag was returned in step 62 a, controller 20 may toggle (disable) the global pass-through feature (step 62 d), and relay command signal 12 a to first receiver 14 for execution (step 62 e). Similarly, if a global pass-through flag was not returned, controller 20 may relay command signal to first receiver 14 for execution (step 62 e). Specifically, controller 20 may cause transmitting device 16 b to retransmit command signal 12 a. Retransmitted command signal 12 b may be coupled into output waveguide 24 at second end 18 b of tether 18. Output waveguide 14 may subsequently route retransmitted command signal 12 b to first receiver 14 at first end 18 a, where retransmitted command signal 12 b may be coupled into, and detected by first sensor 14 a, as discussed above.

If the global pass-through feature was determined to be disabled upon completion of step 62 b, controller 20 may determine if a global pass-through flag was returned in step 62 a (step 62 f). If a global pass-through flag was returned, controller 20 may toggle (enable) the global pass-through feature (step 62 g). Subsequently, controller 20 may relay command signal 12 a to first receiver 14 as discussed above in connection with step 62 e.

If a global pass-through flag was not returned, controller 20 may determine if an unconditional pass-through flag was returned in step 62 a (step 62 h). If an unconditional pass-through flag was returned, controller 20 may relay command signal 12 a to first receiver 14 for execution, as in step 62 e. If an unconditional pass-through flag was not returned, controller 20 may determine if a multi-function pass-through flag was returned in step 62 a (step 62 i). If a multi-function pass-through flag was returned, controller 20 may determine if the device code and/or function code contained in the entry are the same as the device code and/or function code of a previous command (step 62 j). If the device code and/or function code are determined in step 62 j to be the same as the device code and/or function code of the previous command, controller 20 may determine if the inter-key timer period has expired (step 62 k). If the inter-key timer period has not expired, controller 20 may reset the inter-key timer (step 62 l) and relay command signal 12 a to first receiver 14 for execution (step 62 e).

If the inter-key timer period has expired, controller 20 may reset the timer (step 62 m) and cause second receiver 16 to execute command signal 12 a (step 62 n). If controller 20 determines in step 62 j that the device code and/or function code contained in the entry are not the same as the device code and/or function code of the previous entry, controller 20 may likewise cause second receiver 16 to execute the command signal (step 62 n). If controller 20 determines in step 62 i that the multi-function pass-through flag was not returned in step 62 a, controller 20 may also cause second receiver 16 to execute command signal 12 b (step 62 n).

By employing the methods and systems disclosed above, the user may rely on the original remote control, rather than the universal remote supplied by the service provider, to control functions of both the set top box and his or her original equipment. As such, the user may be able to take advantage of all the features available on his or her equipment, rather than forego use of specific features that may not be included on the universal remote control.

Additionally, the disclosed methods and systems may reduce the need for expensive components (e.g., sensors, displays, buttons, LED's, etc.) to be included on the set top box. As such, the physical footprint of the design may be substantially reduced. In addition to reducing manufacturing costs, this may allow the set top box to be stored out of sight and/or in a remote location (e.g., mounted to the back of the television, stored in a closet or another room, etc.). Accordingly, equipment clutter in the user's home may be reduced.

It is intended that the specification and examples described herein be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims. 

1. A system, comprising: a first receiver; a second receiver; an input device configured to transmit a command signal in response to user input; an input waveguide, comprising: a first end in communication with the input device and terminating at the first receiver; and a second end in communication with the second receiver; wherein the input waveguide is arranged to receive and route the command signal to the second receiver; and an output waveguide, comprising: a first end in communication with the first receiver; and a second end in communication with the second receiver; wherein the second receiver is configured to: determine whether the command signal is directed to the first receiver or the second receiver based a code contained in the command signal; execute the command signal when it is determined that the command signal is directed to the second receiver; and relay the command signal through the output waveguide to the first receiver for execution when it is determined that the command signal is directed to the first receiver.
 2. The system of claim 1, further including: a first sensor associated with the second receiver and in communication with the second end of the input waveguide; wherein receiving the command signal includes coupling the command signal into an exposed portion of the input waveguide at the first end thereof and guiding the command signal to the first sensor through the second end of the input waveguide.
 3. The system of claim 2, further including: a second sensor associated with the first receiver and in communication with the first end of the output waveguide; and a transmitting device associated with the second receiver and in communication with the second end of the output waveguide; wherein relaying the command signal includes: retransmitting the command signal by the transmitting device; coupling the retransmitted command signal into an exposed portion of the output waveguide at the second end thereof; and communicating the relayed command signal to the second sensor through the first end of the output waveguide.
 4. The system of claim 3, further including: a first reflective cladding surrounding the input waveguide; a second reflective cladding surrounding the output waveguide; and a sheathing surrounding the input and output waveguides, wherein the exposed portion of the input waveguide protrudes from the first reflective cladding and the sheathing, and the exposed portion of the output waveguide protrudes from the second reflective cladding and the sheathing.
 5. The system of claim 4, further including an opaque member affixing the protruding portion of the output waveguide to the second sensor, wherein the opaque member substantially covers the exposed portion of the output waveguide and the second sensor.
 6. The system of claim 5, wherein the opaque member is an adhesive tape.
 7. The system of claim 1, wherein determining whether the command signal is directed to the first receiver or the second receiver includes: searching for the code in a database; and returning a flag associated with the code.
 8. The system of claim 1, wherein the input and output waveguides are arranged substantially parallel to one another and surrounded by a sheathing.
 9. The system of claim 8, wherein the first ends of the input and output waveguides are affixed to the first receiver, and the second ends of the input and output waveguides are affixed to the second receiver.
 10. The system of claim 8, further including an opaque insulator disposed between the input waveguide and the output waveguide.
 11. The system of claim 1, wherein the input device is a remote control, the first receiver is a television, and the second receiver is a set top box.
 12. The system of claim 1, wherein the input and output waveguides are optical fibers.
 13. The system of claim 1, wherein the command signal is an infrared electromagnetic signal.
 14. A method, comprising: receiving, at a first receiver, a command signal from a user input device; determining, by the first receiver, whether the command signal is directed to the first receiver or a second receiver based on a code contained in the command signal; executing the command signal, by the first receiver, when it is determined that the command signal is directed to the first receiver; and optically relaying the command signal, by the first receiver, to a second receiver for execution, when it is determined that the command signal is directed to the second receiver.
 15. The method of claim 14, wherein receiving the command signal includes: coupling the command signal into an exposed portion of an input waveguide; and receiving the command signal at the first receiver via the input waveguide.
 16. The method of claim 14, wherein routing the command signal includes guiding the command signal to a first sensor associated with the first receiver.
 17. The method of claim 14, wherein determining whether the command signal is directed to the first receiver or the second receiver includes: searching for the code in a database; returning at least one pass-through flag associated with the code; and determining, based on the pass-through flag, whether the command signal is directed to the first receiver or the second receiver.
 18. The method of claim 14, wherein relaying the command signal includes: retransmitting the command signal by a transmitting device associated with the first receiver; coupling the retransmitted command signal into the output waveguide; and guiding the retransmitted command signal to a second sensor associated with the second receiver through the output waveguide.
 19. The method of claim 14, wherein the input device is a remote control, the first receiver is a set top box, and the second receiver is a television.
 20. The method of claim 14, wherein the input and output waveguides are optical fibers.
 21. The method of claim 14, wherein the command signal is an infrared electromagnetic signal.
 22. A system associated with a first receiver, comprising: a sensor configured to sense a command signal transmitted by a user input device; a controller in communication with a second receiver, the controller being configured to: receive the sensed command signal; determine whether the command signal is directed to the first receiver or a second receiver based on a code contained in the command signal; execute the command signal when it is determined that the command signal is directed to the first receiver; and relay the command signal to the second receiver for execution when it is determined that the command signal is directed to the second receiver.
 23. The system of claim 22, further comprising a remote control code database storing a plurality of remote control commands in association with corresponding pass-through flags, wherein the controller is configured to determine whether the command signal is directed to the first receiver or the second receiver by: looking up the code in the remote control code database to retrieve a pass-through code associated with the command signal; and determine whether the command signal is directed to the first receiver based on the retrieved pass-through code.
 24. A method, comprising: receiving, at a first receiver, a remote control command signal from a user input device, the remote control command signal containing at least one code; looking up the at least one code in a remote control code database stored at the first receiver to identify a pass-through flag associated with the remote control command signal; and determining, by the first receiver, whether the remote control command signal is directed to the first receiver or a second receiver based on the pass-through flag; executing the remote control command signal, by the first receiver, when it is determined that the remote control command signal is directed to the first receiver; and relaying the remote control command signal, by the first receiver to the second receiver for execution, when it is determined that the remote control command signal is directed to the second receiver.
 25. A method performed by a set top box, the method comprising: receiving, at the set top box, an infrared remote control command signal from a user remote control device, the remote control command signal containing at least one code; looking up the at least one code in a remote control code database stored at the set top box to identify a pass-through flag associated with the remote control command signal; and determining, by the set top box based on the pass-through flag, whether the remote control command signal is directed to the set top box or to another device based on the pass-through flag; executing the remote control command signal, by the set top box, when it is determined that the remote control command signal is directed to the set top box; and transmitting, by the set top box via infrared radiation, the remote control command signal to the second for execution when it is determined that the remote control command signal is directed to the other device. 